We priced 18 mm nylon straps on AliExpress between $0.99 and $4.85, meaning a standard F-91W plus a band ends up near $25. We searched for 18 mm NATO straps on AliExpress, and there are hundreds of listings between $0.99 and $4.85, most with free shipping, several with four-figure sales counts and ratings above 4.5. This gets even better in wholesale: an IndiaMART supplier in Mumbai (India) quotes ₹18 per piece, around 21 cents. Please note that many of the sub-$2 prices on AliExpress have welcome-deal badges (see below), first-order promotions for new accounts. Take those out and the standard rate for a woven nylon band is closer to 3-5 dollars, still with free shipping.